When asking a question involving system message boxes I try to insert an image of the message box in the body of the question, instead of just quoting a long message (example).
However, the process is tedious. I have to capture the window (Alt-PrtScr), open Paint, paste and trim the image, save a file and then upload to SE.
Is there any way of directly pasting an image from the clipboard?
Ctrl-G
, drag it there, and you're done.